Safety shaper-head.



H. M. WESTPHAL. SAFETY SHAPER HEADV APPLICATION mam) JUNE 18, 1912.13041,931.

Patented Oct. 22, 1912..

x1 iL I I y :5

I I z Witnesses Attorneys COLUMBIA PLANOORAPH c0 WASHINGTON. D. c.

HENRY M. WESTPHAL, OF MANI'IOWOC, WISCONSIN.

SAFETY SHAPER-HEAD. I

Specification of Letters Patent.

Patented Oct. 22, 1912.

Application filed June 18, 1912. Serial No. 704,458.

T 0 all whom it may concern Be it known that I, HENRY M. \Vnsrrrmn, acitizen of the United States, residing at Manitow'oc, in the county ofManitowoc and State of lVisconsin, have invented a new and useful SafetyShaper-I-lead, of which the following is a specification.

The device forming the subject-matter of this application is a cutterhead which may readily be placed upon the spindle of any shapingmachine, novel means being provided for holding the head upon thespindle, and for causing the blade-clamping jaws to cooperate with thesupporting portion of the head.

A'further object of the invention is to provide a cutter head of thetype above men tioned, which will prevent a severe injury to theoperator, should his hand come in contact with the head.

A further object of the invention is to provide a cutter head which willfollow the pattern readily and which will make a clean and clear cut inthe work.

lVith the foregoing and other objects in view, which will appear as thedescription proceeds, the invention resides in the combination andarrangement of parts and in the details of construction hereinafterdescribed and claimed, it being understood that changes in the preciseembodiment of invention herein disclosed can be made within the scope ofwhat is claimed without departing from the spirit of the invention.

In the drawings,Figure 1 shows the invention in side elevation, partsbeing broken away; Fig. 2 is a transverse section of the structure shownin Fig. 1; Fig. 3 is a side elevation of the head, adapted for use incutting moldings and the like; and Fig. 4 is an end elevation of thestructure shown in Fig. 3, one of the collars being removed.

In carrying out the invention there is provided a support 1 having acentral bore 2, the support 1 having parallel, fiat, bladereceivingfaces 3. Extended longitudinally of the support 1 are superficial chipgrooves 1, located, respectively, adjacent the extremities of theblade-receiving faces 3. Projecting from the support 1, adjacent theperiphery thereof, are dowels 5, adapted to enter and to hold in placeagainst longitudinal movement, clamping jaws 6. Each jaw 6 is equippedin its inner face with a blade-receiving recess 7, at the extremity ofwhich a shoulder 8 is formed. The blades are indicated at 9, the bladesbeing engaged in the blade-receiving recesses 7 of the jaws 6, and beingclamped by the jaws 6, against the blade faces 3 of the support 1. It isto be noted that, as indicated at 10, the cutting edges of the blades 9project but little beyond the edges of the chip grooves 4, in fact, notmore than one-thirty-second of an inch, under ordinary workingconditions. T herefore, should the hand of the operator be placedcarelessly upon the cutter head, while the same is rotating, no severeinjury can be inflicted upon the hand of the operator,

owing to the slight protrusion of the cutting edges 10 of the blades 9,beyond the periphery of the support 1.

The ends of the support 1, and the ends of the jaws 6 are tapered asindicated at 11, so as to register in tapered recesses 1215, formed inthe inner faces of collars 14 and 16, respectively. The collar 16, inits interior, is preferably threaded as indicated at 17.

In Figs. 3 and 4:, the cutter head is shown as adapted for use incutting moldings. The structure shown in the figures last abovementioned comprises a support 18, jaws 19, collars 20 and knives orblades 21. No specific description of the structure shown in Figs. 3 and4: is necessary, beyond the statement that the knives or blades 21, attheir cutting edges, are shaped to correspond to the contour of thearticle which it is desired to produce, the jaws 19, of course, beingshaped to conform to the contour of the cutting edges of the blades orknives 21.

In practical operation, the collar 14 is slipped onto the spindle of themachine. The blades 9 are mounted in place between the jaws 6 and thesupport 1, and the tapered ends 11 of the parts 1 and 6 are introducedinto the recess 12 in the collar 14. The collar 16 is then threaded uponthe end of the spindle of the machine, the other, tapered ends 11 of.the parts 1 and 6 registering in the recess 15 in the collar 16. Whenthe collar 16 is rotated, the cutter head will be mounted securely uponthe spindle of the machine, and at the same time, the jaws 6 will bemoved transversely of the support 1, so as to engage and grip the blades9, a transverse movement occurring due to the cooperation between thetapered ends 11 of the parts 1 and 6 upon the one hand, and the recesses12 and of the collars 14 and 16, respectively, upon the other hand.

As will be understood readily, either of the collars l t or 16 may bemade to follow a pattern, whereby when the cutter head is rotated, theblades 9 will work to form a sinuous or undulated cut in the material.In operation, the projecting edge 10 of the blade 9 is ordinarilydisposed flush with the peripheries of the collars 14 and 16. Thus, aseither of the collars 14 or 16 rides along the pattern, the blades 9will cut the material in exact conformity to the pattern.

The device herein disclosed is of few parts, and is simple in operationand in adjustment. It may be assembled readily with any spindle whichconforms to the bore 2 of the support 1.

Having thus described the invention, what is claimed is 1. In a deviceof the class described, a support; jaws applied to opposite faces of thesupport, the jaws and the support being provided with tapered ends; andcollars having in their inner faces, conical recesses adapted to receivethe tapered ends of the jaws and of the support.

2. In a device of the class described, a

support having flat side faces; jaws applied to the flat side faces ofthe support, the jaws and the support being provided with tapered ends;collars having conical recesses in their inner faces, adapted to receivethe tapered ends of the jaws and of the support, the support having anaxial bore alined with the openings through the collars, the openingthrough one collar being threaded.

3. In a. device of the class described, a support having fiat sidefaces; jaws applied to the flat side faces of the support and equippedin their inner faces with bladereceiving recesses, there being dowelpins connecting the support and the jaws, beyond the recesses, the jawsand the support being provided with tapered ends; collars having conicalrecesses in their inner faces, adapted to receive the tapered ends ofthe support and of the jaws.

In testimony that I claim the foregoing as my own, I have hereto affixedmy signature in the presence of two Witnesses.

HENRY M. WE STPI-IAL.

Witnesses:

F. J. KUNz, W. F. ZEMAN.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents. Washington, D. C.

